Answer:
4x - 24
Step-by-step explanation:



Let number of adult tickets be a , therefore number of student ticket be a+4 .
And total cost of the tickets is 58, that is

Distributing 2.50 on a+4

Combining like terms

Number of adult tickets are 8 and number of students tickets are 12.
Answer:
Please see attached picture for full solution.
Let number of plastic containers collected by fourth grade= x
Then number of plastic containers collected by fifth grade students=x-216
OR
If number of plastic container collected by fifth grade is y
then number of plastic container collected by fourth grade=y+216
So, we can write it as follows
⇒ number of plastic containers collected by fourth grade= number of plastic containers collected by fifth grade +216